Heather Bansley / Brandie Wilkerson, Canada (15) defeated Ana Gallay / Virginia Zonta, Argentina (34) 2-0 (21-12, 21-10).
It was the first FIVB World Tour meeting between the two teams.
In Pool J, Canada is 1-0 and Argentina 0-1.
Up next for Canada is Norisbeth Agudo / Gabi Brito of Venezuela while Argentina plays Switzerland's Nina Betschart / Tanja Hüberli. Both matches are on Sunday, 30 July.